<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card >

        <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
            <el-col :span="9" > 
                <el-input placeholder="请输入内容"  v-model="queryInfo.query" clearable @clear="getUserList">
                <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
            </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>

        <!-- 用户列表 -->
        <el-table
            :data="userlist"
            style="width: 100%" border stripe>
            <el-table-column  type="index"></el-table-column>
            <el-table-column prop="username"  label="姓名"  ></el-table-column>
            <el-table-column prop="email"  label="邮箱"  ></el-table-column>
            <el-table-column prop="mobile"  label="电话" ></el-table-column>
            <el-table-column prop="role_name"  label="角色"></el-table-column>
            <!-- 如果同时为一个模板列，指定了prop和作用域插槽，呢么这个作用域插槽会覆盖掉这个prop -->
            <el-table-column  label="状态" >
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="185px">
                <template slot-scope="scope">
                    <!-- 修改按钮 -->
                    <el-button @click="showEditDialog(scope.row.id)" type="primary" icon="el-icon-edit" size="mini"></el-button>
                    <!-- 删除按钮 -->
                    <el-button @click="removeUserById(scope.row.id)" type="danger" icon="el-icon-delete" size="mini"></el-button>
                    <!-- 分配角色按钮 -->
                    <el-tooltip  effect="dark" content="分配角色" placement="top" >
                       <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button> 
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%" @close="addDialogClosed">
        <!-- 内容主题区域 -->
        <el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
             <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
             <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
             <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
        title="修改用户信息"
        :visible.sync="editDialogVisible"
        width="50%" @close="editDialogClosed">

        <!-- ref是引用 -->
        <el-form ref="editFormRef" :model="editForm" label-width="70px" :rules="editFormRules">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="手机"  prop="mobile">
                <el-input v-model="editForm.mobile" ></el-input>
            </el-form-item>
        </el-form>

        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
      <!-- 分配权限的对话框 -->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed">
        
       <div>
           <p>当前的用户:{{userInfo.username}}</p>
           <p>当前的角色:{{userInfo.role_name}}</p>
           <p>分配新角色
                <el-select v-model="selectedRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
           </p>
       </div>

        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
    data(){
        //定义邮箱验证的规则 
        var checkEmail=(rule,value,cb) =>{
            //reg-email直接生成规则
            const regEmail= /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/
            if(regEmail.test(value)){
                //合法的邮箱,返回回调函数
                return cb()
            }
            //如果回调函数没有返回出去，则说明输入错误
            cb(new Error('请输入合法的邮箱'))
        }
        //定义手机验证的规则 
        var checkPhone=(rule,value,cb) =>{
            //reg-phone直接生成规则
            const regPhone= /^[1][3,4,5,7,8][0-9]{9}$/
            if(regPhone.test(value)){
                //合法的手机号,返回回调函数
                return cb()
            }
            //如果回调函数没有返回出去，则说明输入错误
            cb(new Error('请输入合法的手机号'))
        }
        return{
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前的页数
                pagenum:1,
                //当前每页显示多少条数据
                pagesize:2
            },
            userlist:[],
            total:0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //添加表单的验证规则对象
            addFormRules:{
                username:[
                    {required:true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名的长度在3~10个字符之间',trigger:'blur'}
                ],
                password:[
                    {required:true,message:'请输入密码',trigger:'blur'},
                    {min:6,max:15,message:'密码的长度在6~15个字符之间',trigger:'blur'}
                ],
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机号',trigger:'blur'},
                    {validator:checkPhone,trigger:'blur'}
                ],
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormRules:{
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},
                    {validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机号',trigger:'blur'},
                    {validator:checkPhone,trigger:'blur'}
                ],
            },
            //控制分配角色对话框的显示与隐藏
            setRoleDialogVisible:false,
            //需要被分配角色的用户角色
            userInfo:{},
            //所有角色的数据列表
            rolesList:[],
            //已选中的角色Id值
            selectedRoleId:''
        }
    },
    created(){
        this.getUserList() 
    },
    methods:{
        async getUserList(){
            const {data:res}= await this.$http.get('users',{params : this.queryInfo})
            if(res.meta.status !== 200){
                return this.$message.error('获取用户列表失败!')
            }
            this.userlist=res.data.users
            this.total=res.data.total
            //console.log(res)
            //console.log(this.userlist)
        },
        //监听pagesize改变的事件
        handleSizeChange(newSize){
            //console.log(newSize)
            this.queryInfo.pagesize=newSize
            this.getUserList()
        },
        //监听 页码值 改变的事件
        handleCurrentChange(newPage){
            //console.log(newPage)
            this.queryInfo.pagenum=newPage
        },
        //监听 switch 开关状态的改变
        async userStateChanged(userinfo){
            //console.log(userinfo)
            const {data:res} =await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status!==200){
                userinfo.mg_state=! userinfo.mg_state
                return this.$message.error('更新用户状态失败')
            }
            this.$message.success('更新用户状态成功!')
        },
        //监听添加用户对话框关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮，添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid) return
                //可以发起添加用户的网络请求
                const {data:res}= await this.$http.post('users',this.addForm)
                if(res.meta.status!==201){
                    this.$message.error("添加用户失败")
                }
                 this.$message.success("添加用户成功")
                 //隐藏添加用户的对话框
                 this.addDialogVisible=false
                 //刷新列表,重新获取用户列表
                 this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog(id){
            //console.log(id)
            const {data:res}= await this.$http.get('users/'+id)
            if(res.meta.status!==200){
                return this.$message.error("获取用户信息失败")
            }
            this.editForm=res.data
            this.editDialogVisible=true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid =>{
                if(!valid) return
                //发起修改用户信息的数据请求
                const {data:res}  =await this.$http.put('users/'+this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile,
                })
                if(res.meta.status !==200){
                    return this.$message.error('更新用户信息失败！')
                }
                //关闭对话框
                this.editDialogVisible=false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success("更新用户信息成功")
            })
        },
        //根据id删除对应的用户信息
        async removeUserById(id){
            //弹框询问用户是否删除数据
             const confirmResult= await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                //捕获取消行为
            }).catch(err => err)
            //console.log(confirmResult)
            //如果用户 确定 删除返回的是字符串 confirm
            //如果用户 取消 删除返回的是字符串 cancel
            if(confirmResult!=='confirm'){
                return this.$message.info('已经取消删除')
            }
            //console.log('确认了删除')
            const {data:res}=await this.$http.delete('users/'+id)
            if(res.meta.status!==200) return this.$message.error('删除用户失败!')
            this.$message.success('删除用户成功！')
            this.getUserList()

        },
        async setRole(userInfo){
            this.userInfo=userInfo

            //获取所有角色列表
            const {data:res}=await this.$http.get('roles')

            if(res.meta.status!==200){
                return this.$message.error('获取角色列表失败!')
            }
            this.rolesList=res.data

            this.setRoleDialogVisible=true
        },
        
        //点击按钮分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色')
            }

            const{data:res}=await this.$http.put(`users/${this.userInfo.id}/role`,{
                rid:this.selectedRoleId
            })

            if(res.meta.status!==200){
                return this.$message.error('更新角色失败！')
            }

            this.$message.success('更新角色成功！')
            this.getUserList()

            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId=''
            this.userInfo={}
        }
    }
}
</script>

<style lang="less" scoped>
</style>